/*
 * Copyright 2020-present the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      https://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.springframework.graphql.docs.client.subscriptions.execute;

import reactor.core.publisher.Flux;

import org.springframework.graphql.client.ClientResponseField;
import org.springframework.graphql.client.GraphQlClient;

public class ExecuteSubscription {

	void subscriptionExecute() {
		GraphQlClient client = null;
		// tag::subscriptionExecute[]
		Flux<String> greetingFlux = client.document("subscription { greetings }")
				.executeSubscription()
				.map((response) -> {
					if (!response.isValid()) {
						// Request failure...
					}

					ClientResponseField field = response.field("project");
					if (field.getValue() == null) {
						if (field.getErrors().isEmpty()) {
							// Optional field set to null...
						}
						else {
							// Field failure...
						}
					}

					return field.toEntity(String.class);
				});
		// end::subscriptionExecute[]
	}
}
